Woody species composition, diversity and vegetation structure of two protected areas along a climatic gradient in Burkina Faso (West Africa)

2019 ◽  
Vol 54 (3-4) ◽  
pp. 163-175
Author(s):  
Moussa Ganamé ◽  
Philippe Bayen ◽  
Issaka Ouédraogo ◽  
Kangbéni Dimobe ◽  
Adjima Thiombiano
Keyword(s):  
West Africa ◽  
Species Composition ◽  
Burkina Faso ◽  
Protected Areas ◽  
Vegetation Structure ◽  
Woody Species ◽  
Climatic Gradient

scholarly journals Effets combinés des facteurs anthropiques et climatiques sur l’état des populations de trois espèces ligneuses vulnérables

2020 ◽  
Vol 14 (5) ◽  
pp. 1763-1785
Author(s):  
Lassina Traore ◽  
Oumarou Sambare ◽  
Salfo Savadogo ◽  
Amadé Ouedraogo ◽  
Adjima Thiombiano
Keyword(s):  
Burkina Faso ◽  
Protected Areas ◽  
Species Conservation ◽  
Woody Species ◽  
Anthropogenic Pressure ◽  
Vulnerable Species ◽  
Climatic Gradient ◽  
Detarium Microcarpum ◽  
Significant Difference ◽  
Juvenile Individual

Les facteurs climatiques et anthropiques sont à l’origine de la régression de la population de nombreuses espèces ligneuses en zone soudanienne. Anogeissus leiocarpa, Bombax costatum et Detarium microcarpum sont des espèces qui ont une importance socio-économique avérée et donc elles se révèlent être vulnérables. L’évaluation comparée de l’état des peuplements des trois espèces dans les aires protégées et non protégées suivant le gradient climatique permettra de disposer d’informations utiles pour leur gestion durable. La structure des populations a été évaluée à partir d’inventaires forestiers basés sur un échantillonnage aléatoire à travers des parcelles rectangulaires de 1000 m². Les individus dont le diamètre du tronc à 1,3 m de hauteur est supérieur ou égal à 5 cm ont été mesurés. La régénération (individus à D1,3 m < 5 cm) a été comptée par classe de hauteur dans des sous-placettes de 25 m². Les densités et les surfaces terrières des trois espèces varient significativement suivant le gradient de protection dans chaque secteur climatique. A. leiocarpa et D. microcarpum possèdent de bonnes structures démographiques dans les deux secteurs climatiques soudaniens, indépendamment du type d’utilisation de terres. Seule la densité de B. costatum montre une différence significative le long du gradient climatique entre les aires protégées. L’étude révèle l’importance des aires protégées dans la conservation de ces espèces vulnérables.Mots clés : Burkina Faso, zone soudanienne, aires protégées, aires non protégées, espèces vulnérables, conservation.   Climate and land use types are mainly responsible for the decline of many woody species in Sudanian areas. Anogeissus leiocarpa, Bombax costatum and Detarium microcarpum are high-value but vulnerable species due to the anthropogenic pressure. The compared assessment of the state of the targeted species in the protected and unprotected areas along the climatic gradient will provide information that could help implementing sustainable management of these species. The population structures were evaluated from forest inventories based on a random sampling through rectangular plots of 1000 m². The adult individuals of each species with diameters ≥ 5 cm at 1.30 m of heigh were measured. The juvenile individual with diameters that were less than 5 cm were counted and classified into height classes within plots size of 25 m². The structural characteristic of the targeted species vary significantly between land uses within each climatic zone. A. leiocarpa and D. microcarpum showed a stable population structure between the two climatic sectors, irrespective of management regimes. Only density of B. costatum shows a significant difference in the PAs and along climatic gradient. The study reveals the importance of protected areas for these vulnerable species conservations.Keywords: Burkina Faso, Sudanian zone, protected areas, unprotected areas, vulnerable species, conservation.

scholarly journals Magnoliophyta, Arly National Park, Tapoa, Burkina Faso [with erratum]

Check List ◽  
2011 ◽  
Vol 7 (1) ◽  
pp. 085 ◽  
Author(s):  
Oumarou Ouédraogo ◽  
Marco Schmidt ◽  
Adjima Thiombiano ◽  
Karen Hahn ◽  
Sita Guinko ◽  
...  
Keyword(s):  
West Africa ◽  
Species Composition ◽  
Burkina Faso ◽  
Protected Areas ◽  
National Park ◽  
Continuous System ◽  
Life Forms ◽  
Plant Species Composition ◽  
Large Mammal ◽  
High Share

The Arly National Park of southeastern Burkina Faso is in the center of the WAP complex, the largest continuous system of protected areas in West Africa. Although well known for its large mammal populations, its flora has largely been unexplored until recently. The plant species composition is typical for sudanian savanna areas with a high share of grasses and legumes and similar to other protected areas of the complex, the neighbouring Pama reserve and W National Park. It has more species in common with the classified forest of Kou in SW Burkina Faso than with the geographically closer Sahel reserve. The 490 species belong to 280 genera and 83 families. The most important life forms are phanerophytes and therophytes.

scholarly journals Vegetation Structure and Carbon Stocks of Two Protected Areas Within the South-Sudanian Savannas of Burkina Faso, West Africa

2016 ◽  
Author(s):  
Mohammad Qasim ◽  
Stefan Porembski ◽  
Dietmar Sattler ◽  
Katharina Stein ◽  
Adjima Thiombiano ◽  
...  
Keyword(s):  
West Africa ◽  
Burkina Faso ◽  
Protected Areas ◽  
Vegetation Structure ◽  
Nature Reserve ◽  
Carbon Stocks ◽  
Vegetation Types ◽  
The South ◽  
Importance Value ◽  
Gallery Forests

Savannas and adjacent vegetation types like gallery forests are highly valuable ecosystems contributing to several ecosystem services including carbon budgeting. Financial mechanisms such as REDD+ have provided an opportunity for developing countries to alleviate poverty through conservation of its forestry resources. For availing this opportunity carbon stock assessments are essential. Therefore, a research study at two protected areas i.e. Nazinga Game Ranch and Bontioli Nature Reserve, in Burkina Faso was conducted with the objective of assessing carbon Mg C ha-1 in aboveground biomass (AGB)dry of trees in different formations of the south-sudanian savanna in Burkina Faso, West Africa. Similarly analysis of various vegetation parameters was also conducted to understand the overall vegetation structure of these two protected areas. For estimating AGBdry, existing allometric equation for dry tropical woody vegetation types was used. The Importance Value Index (IVI) and Family Importance Value (FIV) were estimated through standard procedures. Various linear and non-linear regression analyses were conducted to test the relationships between carbon and other parameters such as DBH, height and basal area (BA). The results showed that both sites collectively contain mean carbon of 3.41 &plusmn; 4.98 Mg C ha-1. Amongst different vegetation types, gallery forests recorded the highest mean carbon of 9.38 &plusmn; 6.90 Mg C ha-1. The highest IVI of 115.56 at Nazinga Game Ranch was recorded for Anogeissus leiocarpa. Similarly, highest IVI of 98.59 was recorded for Mitragyna inermis at Bontioli Nature Reserve. The highest FIV was recorded for Combretaceae for both of the sites. To our knowledge, this was the first study conducted to assess the carbon stocks at the two protected areas in southern Burkina Faso. The study therefore was an attempt for addressing the knowledge gap particularly on carbon stocks of protected savannas. It could serve as a baseline for carbon stocks for future initiatives such as payment for environmental services and REDD+ at these areas.

Plant biodiversity patterns along a climatic gradient and across protected areas in West Africa

2018 ◽  
Vol 56 (3) ◽  
pp. 641-652 ◽  
Author(s):  
Sié Sylvestre Da ◽  
Jaime Ricardo García Márquez ◽  
Jan Henning Sommer ◽  
Adjima Thiombiano ◽  
Georg Zizka ◽  
...  
Keyword(s):  
West Africa ◽  
Protected Areas ◽  
Plant Biodiversity ◽  
Climatic Gradient ◽  
Biodiversity Patterns

Germination requirements of seeds of four woody species from the Sudanian savanna in Burkina Faso, West Africa

2005 ◽  
Vol 33 (3) ◽  
pp. 581-593 ◽  
Author(s):  
D. Zida ◽  
M. Tigabu ◽  
L. Sawadogo ◽  
P.C. Oden
Keyword(s):  
West Africa ◽  
Burkina Faso ◽  
Woody Species ◽  
Germination Requirements

Preliminary data on density and habitat of carnivores in two protected areas of Burkina Faso (West Africa)

Mammalia ◽  
2019 ◽  
Vol 84 (1) ◽  
pp. 69-73 ◽  
Author(s):  
Emmanuel M. Hema ◽  
Tinsgnimi Dialla ◽  
Djidama Sirima ◽  
Yaya Ouattara ◽  
Ismael Tou ◽  
...  
Keyword(s):  
West Africa ◽  
Habitat Use ◽  
Burkina Faso ◽  
Protected Areas ◽  
Preliminary Data ◽  
High Field ◽  
Habitat Type ◽  
Line Transects ◽  
Very High ◽  
Index Of Abundance

Abstract Apparent density [determined as kilometric index of abundance (KIA), by direct sightings and by droppings along line transects] and habitat use of some species of carnivore mammals were studied in two protected areas of Burkina Faso (Comoé-Leraba and Nazinga). Despite the fact that the dataset was collected throughout several years and with a very high field effort, the amount of data collected was relatively small, and confined just to a few species. There was no effect of the year on the average KIA estimates of the carnivores at this study area, and data from direct sightings along transects estimated lower densities than those coming from droppings collected along the same transects. In terms of habitat type, shrub savannah represented the best habitat type for carnivores, despite being relatively scarcely available along the line transects when compared with woody savannah (especially for Canis adustus and Civettictis civetta).

Models for estimating aboveground biomass of four dryland woody species in Burkina Faso, West Africa

2020 ◽  
Vol 180 ◽  
pp. 104205
Author(s):  
Philippe Bayen ◽  
Florent Noulèkoun ◽  
Fidèle Bognounou ◽  
Anne Mette Lykke ◽  
Adrien Djomo ◽  
...  
Keyword(s):  
West Africa ◽  
Burkina Faso ◽  
Aboveground Biomass ◽  
Woody Species

scholarly journals Sustainability, Population and Structure of Woody Species Composition of Taraba State Forests

2019 ◽  
pp. 1-13
Author(s):  
Meer, Bernard Bunde ◽  
Tella, Iyiola ◽  
M. G. Saka ◽  
Nyiputen, Isaac ◽  
Gbande, Solomon ◽  
...  
Keyword(s):  
Population Structure ◽  
Species Composition ◽  
Protected Areas ◽  
Woody Species ◽  
Montane Forest ◽  
Ziziphus Mauritiana ◽  
Ecological Zones ◽  
Northern Guinea Savanna ◽  
Guinea Savanna ◽  
Afzelia Africana

Sustainability, population and structure of woody species composition of Taraba state forests were studied for future management strategies that allow a more sustainable use of woody species and a better conservation of forest ecosystems. The objectives of the study were to study the woody species dominance, important value index and population structure in different ecological zones of Taraba State forests. Data were obtained through woody species survey and the study area was stratified into three ecological zones and two protected areas. Five plots each measuring 50×50 m were sampled in each protected area and two protected areas were also sampled from each ecological zone. A total of 30 plots and 6 protected areas were sampled and all the woody species that occurred in the plots were also sampled. Data were analyzed using descriptive and inferential statistics such as Tables, percentages, frequency, ANOVA and LSD. A total of 3760 individual woody stands from 60, 34 and 32 species in Montane Forest, Southern and Northern Guinea Savanna respectively were recorded. Strombosia postulate, Pleiocarpa pycnantha, Pericopsis laxiflora, Hymenocardia acida and Ziziphus mauritiana were the dominance species while their corresponding rarest species were Goria sp, Afzelia africana, Elaesis guneensis, Combretum tomentosum and Ficus sur. Strombosia postulate and Pleiocarpa pycnantha were the dominant woody species with high important value indices in Montane forest zone as opposed to Pericopsis laxiflora and Ziziphus mauritiana which dominated the Southern and Northern guinea savanna respectively. The rarest species of Goria sp, Afzelia africana, Elaesis guneensis, Combretum tomentosum and Ficus sur in the study area could be connected to its usefulness as fodder species. The population structure of woody species was found to be very low in the middle diameter classes.The diameter class distribution resembles interrupted “U” shape indicating the removal of merchantable trees. There were no significant differences (p>0.05) among the protected areas and ecological zones due to the low dominance and important value indices. This needs appropriate management techniques to improve forest composition and structure in the study area for sustainability.

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